Cultivo do tomate cv. cereja sob salinidade da água de irrigação e manejo do sistema

Abstract

The use of saline water is a challenge for current agriculture in the world, considering that salt stress generates a decrease in the quality and productivity of crops. Thus, the objective was to evaluate the management of the root system and salinity of irrigation water in tomato cultivation. To evaluate the management of the root system and salinity of irrigation water in tomato cultivation. The experiment was conducted in a greenhouse at the experimental unit of the Campus of Engineering and Agrarian Sciences of the Federal University of Alagoas, in Rio Largo, AL. The treatments consisted of four salinity levels of the irrigation water (0.5 (control); 1.5; 2.5 and 3.5 dS m-¹) and two management of the root system of the tomato crop (with division and without Division of the root system). The experimental design used was completely randomized in a 4 x 2 factorial scheme. Combined, the factors resulted in 8 treatments, with five replications, making a total of 40 experimental units, consisting of one plant, totaling 40 plants. The plants were evaluated for growth, mass accumulation and production. It was found that the number of fruits and fresh fruit mass were influenced by the interaction between the management of the root system and the salinity of the irrigation water. plant height differences significant differences in management with the use of saline water up to salinity up to 2.5 dS m-¹, management with division of the root system increased the number of fruits. The use of saline water of 3.5 dS m-¹ caused a reduction in all variables. However, when making a derivation of the quadratic regression for the various cases in which it is showing significance by the analysis, variations in the levels of salinity were observed.